This method simplifies the coupling stiffness in tooth width direction with a decay function and neglects the influence of local differences in tooth stiffness. These influence numbers are calculated with a BEM-module and considered for calculating the local root stress. With LTCA software like BECAL, influence numbers are used to calculate the deformation of the gear. For the calculation of the flank and root load capacity, a precise loaded tooth contact analysis (LTCA) is necessary. In order to be able to carry out an optimal gear design with the aim of cost reduction and the careful handling of resources, load capacity is an important criterion for the evaluation of a gear.
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